crypto.py 文件源码

def dump_pem(key_or_crt):
    if isinstance(key_or_crt, rsa.RSAPrivateKey):
        return key_or_crt.private_bytes(
            encoding=serialization.Encoding.PEM,
            format=serialization.PrivateFormat.PKCS8,
            encryption_algorithm=serialization.NoEncryption()
        )
    elif isinstance(key_or_crt, rsa.RSAPublicKey):
        return key_or_crt.public_bytes(
            encoding=serialization.Encoding.DER,
            format=serialization.PublicFormat.PKCS1
        )
    else:
        return key_or_crt.public_bytes(
            encoding=serialization.Encoding.PEM
        )